Clamp.



' film a aw J. SINNING & P. A, DE LANGE.

CLAMP.

APPLICATION TILED JULY 18. 1908.

925,603. Patented June 22, 1909. c

2 SKEETSBHEBT. 1.

JIIiLM J. SINNING & P. A. DB LANGE;

CLAMP. APPLICATION IILBD JULY 1B. 1908.

Patented June 22,1909.

2 SHEETS-4113B! 2.

UNITED STATES PATENT @EETQE.

JOHN SINNING AND PETER A. DE LANGE, OF LENNOX, SOUTH DAKOTA.

CLAMP.

Specification of Letters Patent.

Application filed July 18, 1908.

Patented June 22, 1909.

Serial No. 444,303.

To all whom it may concern-.-

Be it known that we, JOHN SINNING and PETER A. DE LANGE, citizens of theUnited States, residing at LennoX, in the county of Lincoln and State ofSouth Dakota, have invented certain new and useful Improvements inClamps; and we do hereby declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same.

This invention is designed to afford means whereby mortars and otherreceptacles or objects may be easily and quickly clamped for beingsecurely held in place during use and whereby they may be just asreadily released when desired, it being an object to provide a device ofthis character whose construction is simple and whose operation iseffective and entails little exertion.

When read in connection with the description herein, the details ofconstruction and arrangement of parts contemplated by this inventionwill be apparent from the accompanying drawings, forming part hereof,wherein a preferable embodiment of the invention is disclosed, forpurpose of illustration.

Like reference-characters refer to corresponding parts in the severalviews of the drawings, of which- Figure 1 is a plan view; Fig. 2 is asectional view on the line zz, Fig. 1; Fig. 3 is a view of one of theclamp-slides; Fig. 4 is a plan view of the fixed member of the device;Fig. 5 is a bottom view thereof; and Fig. 6 is a sectional view on theline y z Fig, 4.

Having more particular reference to the drawings, 7 designates asupporting member, which may be secured to, or be a part of, a table,counter, or the like. Attached to and rojecting upwardly from thissupport is a ed pinion 8, having an aperture 9 therethrough for passageof a pivot 10, the pivot extending into the support.

Disposed on support 7 is a rotatable member 11, having pinion 8 as itspivot. A plurality of grooves 12 are formed in member 11. The bottomsurface of every groove lies in a different plane from that of theothers, and the grooves are disposed in the lines of different diametersof a circle of which pinion 8 would be the center. Located in eachgroove is a guideway 13, the guideways being independent of each other,crossing one above another at the pinion, and having alined apertures toaccommodate the pinion and permit it to project through all of them. Aclamp-slide 14 is positioned and longitudinally movable in eachguideway, the slide being held therein by an overlapping flange 15 oneach side. The slide is formed with parallel arms '16 and 17 of adistance apart to permit disposition one on each side of the pinion, andone of the arms, for instance 16, is toothed and arranged to mesh withthe pinion. The toothed arms of the slides are so correlated that, whenmember 11 is rotated, all of them will move either toward or from thepinion at the same time and will simultaneously and mutually cooperateto clamp or release an object. At the outer end of each slide is aclamp-projection 18. Member 11 is held down in place by a head 19 onpivot 10, the head overlapping the top guideway.

A movable friction element 20 is seated in an aperture or recess insupport 7 beneath, and arranged for frictional engagement with, thebottom of member 11, whereby said member may be held in any desiredposition of rotation. Element 20 engages an arm 21 at or near an endthereof, the arm being pivoted intermediate its ends, and a thumbscrew22 engages the arm at or near its other end. Arm 21 is preferablydisposed in a groove 23 formed in the bottom of support 7. Thumb-screw22 is held by a threaded sleeve 24 which is fixed in or to the support,and its head projects above the support and outside of the limits ofmember 1 1 where it is accessible and where it does not interfere withthe rotation of that member.

A knob or other suitable projection 25 is secured to member 11 where itcan be conveniently grasped by the hand for rotating the member.

When it is desired to clamp or release an object which has been placedon member 11 between the projections 18, member 11 is rotated in aproper direction, when the slides in engagement with the fixed pinionwill be moved to cause the projections to move inwardly against oroutwardly from the object, as the case may be. By operation ofthumbs'crew 22 friction element 19 is causedto engage member 11 toprevent its rotation and release of the clamp or to disengage it topermit its rotation, as desired.

Having thus described our invention, what we claim as new, and desire tosecure by Let ters Patent, is

1. A clamp comprising a rotatable carrying member, a plurality ofguideways thereon, a fixed pinion projecting through said guideways, andclamp-slides in said guideways in mesh with said pinion, said slidesbeing arranged to all be moved at the same time inwardly or outwardlyupon rotation of said member.

2. A clamp comprising a rotatable carrying member, a plurality ofguideways thereon, a fixed pinion projecting through said guideways,clamp-slides in said guideways in mesh with said pinion, said slidesbeing arranged to all be moved at the same time in wardly or outwardlyupon rotation of said member, and means whereby rotationof said memberis controlled.

3. A clamp comprising a supporting member, a fixed pinion thereon, arotatable member having independent guideways through which said pinionprojects, and clamp-slides in said guideways in mesh with said pinionand arranged to clamp or release an object upon rotation of saidrotatable member.

In testimony whereof we affix our signatures, in the presence of twowitnesses.

JOHN SINNING. PETER A. DE LANGE.

Witnesses:

M. N. CROWLEY, J. P. HEUmoi-r.

